Wi-Fi calling is a new feature of iOS 8 that's available initially to T-Mobile customers in the United States and EE customers in the U.K. What's more, it's coming to other carriers in the coming months. It lets your iPhone make and receive calls using Wi-Fi instead of depending on your carrier's cell tower coverage. Here's how it works.

We may have had to deal with the usual April articles yesterday, but one that stood out from all the jokes was T-Mobile’s plans to scrap corporate discount from Simple Choice plans. The mobile network has today confirmed a partial reversal, allowing only existing customers to retain their discount. Sorry, new subscribers.

Verizon doesn't want competitors T-Mobile and AT&T to get all the attention for their recently unveiled JUMP and Next upgrade programs, respectively. Today the company announced Edge, their own program to enable customers to upgrade phones earlier than once every two years. On Thursday Verizon introduced its own plan, called Edge.

After its failed merger with AT&T, it seemed that T-Mobile was doomed. But the company has come roaring back with a 4G network buildout, game-changing contract deals for its customers, and an agressive marketing campaign. I decided to switch to T-Mobile when I got my iPhone 5, but I ran into a few roadblocks that finally got sorted this past weekend. I figured I'd pass along some pointers for others stuck in the same boat.

AllThingsD was able to sit down with T-Mobile CEO Philipp Humm, who offered insight into why the carrier hasn't yet come to a deal with Apple to officially carry the iPhone on their network.

“The key reason we didn’t have the iPhone in the past is we are on different band than globally the market was,” Humm said. “That is something which will change over time. Chipsets are also evolving to be able to allow for more bands.”

This, however, will change with the failed merger attempts from AT&T. When the deal fell apart, T-Mobile walked away with a cool $3 billion and additional AWS spectrum needed to support a device like the iPhone.

TmoNews is reporting that some unlocked iPhone users may be picking up T-Mobile's 3G network in small areas of the Pacific Northwest -- specifically limited pockets in Nevada, Utah and California -- due to spectrum reallocation under the 1900MHz band.

Most unlocked iPhone users are relegated to 2G due to most of the T-Mobile 3G network running on the AWS spectrum of 1700MHz/2100MHz. We're not exactly sure what they're reallocating the spectrum for, however, multiple reports have surfaced from Howard Forums detailing a jump in speeds and, more specifically, the 3G network indicator popping up in the statusbar on their unlocked iPhone.

In a company blog post earlier today, Cole Brodman, Chief Marketing Officer for T-Mobile USA, told customers that they were interested in offering a "no-compromise iPhone experience" on their network, but offered little details on the negotiations between the carrier and Apple.

T-Mobile Chief Marketing Officer Cole Brodman held a townhall meeting today where he told employees that the company would unfortunately not be included among the carriers getting the iPhone 5 when it launches later this year.

It looks like the 16GB 3G variant of the iPad is now being offered on T-Mobile for UK customers. Depending on what plan you choose, you can snag a bit of a discount on the actual iPad.

New customers can get 1GB of data + 1GB of quiet time data (data used between midnight and 10am) for £27.00/month which will bring the actual iPad cost to £199.00. Existing customers can get the same data plan for £25.00/month and receive the same £199.00 deal on the actual device.

If you'd prefer to go no contract, there are 3 pay as you go plans you can choose from -